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3 years ago

How do the expressions 72 / 9 and -72/ (-9) compare when they are evaluated?

Mathematics

2 answers:

Artemon [7]3 years ago

7 0

Answer:

Step-by-step explanation:

72/9=8

-72/-9=8 because negative/negative=positive.

AlladinOne [14]3 years ago

5 0

D is the right answer

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Can someone plz solve for A&B? Plz and if you do thank you so much :)

Anna71 [15]

Answer:

Part a-

area= 35

perimeter= 31

part b-

area= 25

perimeter= 18

Step-by-step explanation:

to find the area of a triangle you multiply 1/2Bh

so for part A:

A= $\frac{1}{2}$ (10)(7) (honestly, you can just input the whole equation into the calculator)

A=(5)(7)

A= 35

and for part B:

A= $\frac{1}{2}$ (8.34)(6)

A= (4.17)(6)

A=25.02 (or just 25)

THEN, to find the perimeter you add up all of the sides

so for part A:

P= 14 + 10 + 7 = 31

and for part B:

P= 4 $\frac{1}{3}$ + 8 $\frac{1}{3}$ + 5 $\frac{1}{3}$ = 17 $\frac{3}{3}$ or 18

I hope this helps :)

3 0

3 years ago

Plz help with 1 through 6 show ur work

NeX [460]

1. 5×10×7= 350
2. 12×6×8=576
3. 4.2×3.5×2=29.4
4. 1.1×1.5×2.6=4.29
5.4×3×5= 60
6. 4.1×2.6×5.1=47.97

5 0

3 years ago

Which of the following functions represents a cell phone bill if there is a monthly charge of 20 dollars plus 6 cents for each m

Ymorist [56]

First of all judging on how long I use my phone that's pretty expensive.Ok, let's get back on topic.Well, They should more likely ask us to pay about 20 cents per minute
YEAH!

Sincerely,
Jenna

5 0

3 years ago

A binomial event has n = 60 trials. The probability of success for each trial is 0.20. Let x be the number of successes of the e

OLga [1]

Answer:

12 and 3.0984

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

$\mu_{x} = np$

The standard deviation of the binomial distribution is:

$\sigma_{x} = \sqrt{np(1-p)}$

In this problem, we have that:

$n = 60, p = 0.2$

$\mu_{x} = np = 60*0.2 = 12$

$\sigma_{x} = \sqrt{np(1-p)} = \sqrt{60*0.8*0.2} = 3.0984$

So the correct answer is:

12 and 3.0984

4 0

3 years ago

Can you please help me?

Tanya [424]

Answer:

A, B and E

Step-by-step explanation:

A proportional relationship has the form

y = kx ← k is the constant of proportionality

The only equations in this form are

A, B and E

3 0

3 years ago